<template>
 <Demo @hello="showHelloMsg" msg="你好啊" school="尚硅谷">
		<template v-slot:qwe>
			<span>尚硅谷</span>
		</template>
		<template v-slot:asd>
			<span>尚硅谷</span>
		</template>
	</Demo>

</template>

<script>
//import { ref } from '@vue/reactivity';
import Demo from './components/Demo.vue'
export default {
  
  name: 'App',
  components:{Demo},
  setup(){
			function showHelloMsg(value){
				alert(`你好啊，你触发了hello事件，我收到的参数是:${value}！`)
			}
			return {
				showHelloMsg
			}
		}
}
</script>


